Portable drawing board



FIG. 1 is a perspective view of a portable drawing board showing my newdesign;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view, the left side elevational viewbeing a mirror image thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

The ornamental design of a portable drawing board, as shown anddescribed.